Selfdestruct battles.

[Monzta]

I hate the move selfdestruct because.. well, simple logic is simple. The foe pokemon blows up, killing itself first, then your pokemon. It faints first ._____. Seriously, it's like ragequitting on a part of the battle. I don't think it should be in PU, discuss here.
(I'm no expert at this type of move, so I don't know the cons and pro's when you use it.)

[TrainerX]

 If your pokemon won't survive another hit and it's faster than your opponent's pokemon, you could use selfdestruct to deal a lot of damage, and it doesn't really matter that your pokemon faints from selfdestruct if it was going to faint anyway.

[Viper]

Explosion, the more common move, is an effective part of some peoples strategies and should be kept. I see no reason why it's any different from a move like bullet punch or such. Also it's not a guaranteed kill against the opponents pokemon so your overreacting a bit.

[Wailord]

I fed my Graveler dynamite pre-battle.

Gravler used Explosion!

[Roloc]

My shuckle soaks it like a champ. I seriously remember
him losing about 8% once when my friend  first fought me and
was silly enough to let my shuckle set up with acupressure.